SOLUTION: Giving a test to a group of students, the grades and gender are summarized below A B C Total Male 16 17 2 35 Female 14 3 18 35 Total 30 20 20 70 If one student was chose

Algebra ->  Test -> SOLUTION: Giving a test to a group of students, the grades and gender are summarized below A B C Total Male 16 17 2 35 Female 14 3 18 35 Total 30 20 20 70 If one student was chose      Log On


   

Question 1195689: Giving a test to a group of students, the grades and gender are summarized below
A B C Total
Male 16 17 2 35
Female 14 3 18 35
Total 30 20 20 70

If one student was chosen at random, find the probability that the student got an A or a B on the test. Write your answer as a reduced fraction or whole number.
P
(A or B) =

Answer by ikleyn(52814) About Me  (Show Source):
You can put this solution on YOUR website!
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In this problem, events A and B are disjoint and gender is irrelevant;  therefore


    P(A or B) = P(A) + P(B) = 30%2F70 + 20%2F70 = 3%2F7 + 2%2F7 = 5%2F7.    ANSWER

Solved.